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Serverless Todo in PHP

This repository is an example of deploying PHP web applications on AWS Lambda. This example uses Custom PHP runtime for deploying lambda function. We can deploy Laravel or Codeigniter applications by simply putting their source code to php/src directory. By Creating API-Gateway in AWS, We can check our running web applications.

Prerequisites

Quick Start

  1. Clone the repo
git clone https://github.com/canopas/serverless-php.git
cd serverless-php

  1. Configure your AWS credentials, region and IAM role in php/deploy.sh

  2. Run DockerFile To deploy Lambda function.

docker build .

Platforms Supports

As this repo support integration for both Laravel and CodeIgniter, There are some prerequisites before deploying lambda functions for each type of application.

  • Set platforms in php/runtime.php according your need.

  • Put source code in php/src directory.

  • If you are using codeigniter, Update $app->run() in public/index.php to

    $response = $app->run();

Storage

  • AWS cannot write logs or cache in Lambda function's directory, we have to change configuration of those in their config files.

  • You can configure database or redis for sessions and cache and stdout for logs in Laravel And Codeigniter.

Explanation

  • DockerFile

    • Used two docker image,
      • First for compile php binary, that binary will used by further docker image.
      • Second for generating zip files for runtime and functions and deploying Lambda function.
    • runtime.zip contains bootstarp, runtime.php, php-cgi, vendor and extra-libraries. It will deploy in Lamda's opt directory.
    • src.zip contains src.

  • bootstarp & runtime.php

    • Bootstrap is entrypoint for custom PHP runtime. It executes runtime.php.

    • runtime.php contains code to handle php on AWS Lambda with the reference of this example.

    • It every time calls index.php to serve incoming requests.

  • php-cgi

    • It is the binary file for executing lambda function.We are using php-cgi because our goal is to deploy serverless php web applications.

  • vendor

    • It contains guzzlehttp/guzzle package dependency for serving http requests.

  • extra-Libraries

    • AmazonLinux2 does not provide all shared libraries, those are required by php execution. We can encounter error when running Lambda function.

      error while loading shared libraries: libcrypt.so.1: cannot open shared object file: No such file or directory.

    • We have to add those libraries manually.

    • I have added some of those here, and you can add others too by following instructions.

      • Make a directory name extra-libraries
      • Copy all required libraries from Amazon Linux to extra-libraries by using following steps :
        • Run amazon Linux docker instance using docker run --rm -it -v :/opt:rw,delegated amazonlinux:latest
        • Then in docker instance make directory using mkdir deps
        • Copy all required libraries from lib64 to deps directory using cp -f lib64/libcrypt.so.1 deps (Taken libcrypt.so.1 for reference)
        • Then open another terminal window and move all library files to local extra-libs using docker cp <DOCKER_CONTAINER_ID>:/deps/ . && mv deps/* ./extra-libraries

    • Updated LD_LIBRARY_PATH in bootstrap, to point this extra-libraries in AWS lambda runtime.

  • src

    • It contains index.php file for serving our php web applications.